Conical pivot-bearing.



A. E. FLETCHER.

` GONIGAL PIVOT BEARING. APPLIUATIGN FILED Novfa, 190B.

Patsnted Jan. @5 i910. I

ALBERT F. FLETCHER, GF CLEVELAND, OHIO.

CONICAL PIVOT-BEARING.

nasale.

Specification of Letters Patent.

Patented Jan. Lt. "t 910.

Application led November 3, 190B. Serial No. 460.855.

7b all whomrz'z. 'may concern.'

Be it known that I, Arnrnrr l?. FLETCHER, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented ne and useful Improvements in Conical Pivot-Bearings, ot which the following a specitieation.

rI'his invention relates to bearings and re lates more particularly to improveuuents iu bearings and lubricating means itor wheels wheel or shaft increased by the reduction ot' wear, and the electrical resistance lessened, in case of trolley wheels.

The invention has for its objects, the reduction of vibration in the bearing parts, and to provide a device which is reliable and etllcient in use, and composed. of comparatively few parts.

Another object of the invention is the provision of a wheel mounted on conical bearings, the bearings being chambered to receive lubricant that is fed to the hub or the wheel to eifectivcly lubricate the bearing surfaces.

A still further object is to improve the construction of the cone bearings whereby the same can be easily and quickly adjusted to talte up wear.

lVith these objects in view and others, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of arts which will be more fully described iereinafter and set forth with particularity in the claim appended hereto.

In the accompanying drawing, which illustrates one embodiment ot' the invention,

'Figure 1 is a central transverse section of a trolley wheel and harp. Fig. 2 is a side view thereof. Fig. 3 is a section on line 3 3, Fig. l.

Similar reference characters are employed to designate corresponding parts throughout the views. Y

eferriug to the drawing, A designates a trolley wheel having a peripheral groove 'l for engaging the trolley wire, and the hub 2 of the wheel ,has a central bore l and conical bearing surfaces 4. The wheel is mounted in a harp B which has a split socket 5 ipto which the upper end of the trolley )ole is inserted and clamped therein by the bolt (3 drawing two parts of the socketI together vexternally threaded.

around the pole. The arms T of the harp terminate in axiallysdisposed tubular extremities or sleeves 8 that are internally threaded to receive the-journals 9 that are The inner ends of the journals are formed into coneslO which eX- lend into the hollow cone vbearings 4 of the wheel to rotatably support the latter, the outer ends of the journals being provided with slots il for receivingl a screw driver j blade to insert, remove or adjust the -jourand shatts whereby easy running of the, wheel or'shaft is secured, the life of the nuls. The sleeves S are slotted longitudinally atv l2 in order to give resiliency thereto and said sleeves are formed with lugs i3 m through ,which extend bolts 14- for clamping the journals t) in the sleeves so that the journ-.ils cannot work loose after being set in proper position. As shown in Fig. 3, the bolt ll for each sleeve passes freely through the aperture l5 in one lug lil and is threaded in th aperture lil of the other lug, so that by turning the bolt, the parts otl the sleeve lan be drawn together for clamping the journal therein. 'the bolt la extends out of the opening lo to receive nut 17 for the purpose of preventing the bolt from jarring loose. 'lhe journals tl are hollow to provide chambers l5 for containing lubricant and these chambers discharge throueh passages lt) into the bore or chamber 3 of the trolley wheel so that lubricant can work outwardly between the cone bearings 4 and points l() of the journals and etl'ectively lubricate the surfaces. The high speed of rotation of the. wheel will. tend to .torce lubri -ant outwardly from the ehanibcr 3 so that the bearing surfaces will be freely lubricated.

The outer ends of the journals are prof vided with plugs 2O that are threaded therek in so as to prevent the leakage of lubricant and these plugs are held in place by Cotter pins 2l that extend transversely through the outer ends of the journals and through the plugs. the plugs being formed each with a slot 2Q for receiving a screw driver blade to remove or insert the plugs.

It will be observed on reference to F 2 that when the plug 2t) inplace and Ythe cotter pin 2l inpos'tion, the slot 22 of tho plug alines with the slot il of the journal. (ln reference to Fig. 'l it will be noticed thatJ when the' plug and cotterpin are in place the outer end of the plug comes t'lush with the outer end of' the journal. After a jour nal has been. supplied w'th lubricant and the pluff 2O has been placed in position to close lll-5 the outer end of the journal it may he known when the openings in the plug and journal register to receive the cotter pin by turning j the plug Q until its outer end comes flush with the outer end of the journal and until the slots 22 and ll register7 after which the 'i Cotter pin may he placed in position without any preliminary trial. It is further noted that when the plug is in position and cured to the journal by the Cotter pin 2l, the journal may he screwed in or out by applying the screw driver solely to the plug or the screw driver may be moved so as to enter the slots :2:2'and ll and thereby prevent straining of either one in the event of the journal being hard to turn.

From the foregoing description, taken in connection with the accompanying drawing., the advantages of the construction and of the method ot operation will he readily apparent to those skilled in the art to which the invention appertains, and while have described the principle of operation of the invention, together with thedevice which I now conf sider -to be the best embodiment thereof. lt

desire to have it understood that the device shown is merely illustrative, and that such changes may he made when desired as are within the scope at the appended claim.

Having thus described the invention, what I claim is ln combination with a trolley harp, a trolley wheel, journals mounted in the arms of the harp and havin screw thread connection therewith, said journals bein hollow and having slots in their outer en s to receive a screw driver, plugs threaded into the Outer ends of the journals .tor closing the same andl formed with screw driver slots, and cotter pins passed through openings in the journals and plugs to retain the plugs in fixed position, the outer ends of the plugs coming Hush with the outer ends of the journals and' the screw driver slots in the plugsregistering with the screw driver slots 1n the journals.

En testimony whereof I affix my signature in presence .of two witnesses.

ALBERT F. FLETCHER.-

'Witnesses Jos. H. NENNEMAN, ANNA F. FLETCHER. 

